Hello Jeroen,
Georg Hermann Friedrich Hustede born 1844 is the son of Georg Hermann Friedrich Hustede born 1812. Margaretha Christina Hustede was the aunt of the father. You can find the whole family Hustede in Elsfleth on the CD for Elsfleth etc. on our homepage:
http://www.genealogienetz.de/vereine/OGF/index.html.
Best regards,
Gunter